A lot of issues with not working addMessage in stale state and never solved

[shawe]

I'm having this issue that are also related to this:

• Message collection #1154
• "Class 'Barryvdh\Debugbar\Facade' not found" after update #1025
• Info, addMessage or any of the other specified messages do not exist / work #905
• Can not collect queries which executed in AppServiceProvider #831
• debugbar::addmessage does not work under certain conditions #177

I'm having the same issue trying to force to appear a message to give visibility to an improperly controlled error.

In my case, I found that a FormRequest with an improperly validation, can cause not pass a validation and not see the error. I think to show it on debugbar for get the needed feedback that what is happening.

I try to do a Middleware to catch the error, dd show the message that debugbar:addMessage doesn't show.
I try to do another class to extends, that have failedValidation, and the same problem. And in this point I try some other things.

This is my final test, that seems to show a non expected behaviour:

<?php

namespace App\Http\Requests;

use Barryvdh\Debugbar\Facades\Debugbar;
use Exception;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Foundation\Http\FormRequest;


class FormRequestValidation extends FormRequest
{
    /**
     * Manejar la validación fallida.
     */
    protected function failedValidation(Validator $validator)
    {
        // Registrar errores en Debugbar
        Debugbar::addMessage($validator->errors()->toArray(), 'Validation failed');

        // throw new Exception('Validation failed: ' . json_encode($validator->errors()->toArray(), JSON_PRETTY_PRINT));

        // Llamar al comportamiento predeterminado (lanza ValidationException)
        parent::failedValidation($validator);
    }
}

With the throw commented, I can't see messages on debugbar.
With the throw uncommented, I can see TWO messages on debugbar.

To try to reproduce this problem, is only needed a form validation with a required field that is not submited.

What is the solution? I don't know, but a lot of people seems to have this kind of problem, but no solution with a problem that seems to happen from nearly 2014.